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<html lang="zh-CN">
  <head>
    <meta charset="utf-8">

    <title>猜数字游戏</title>

    <style>
      html {
        font-family: sans-serif
      }
      body {
        width: 50%;
        max-width: 800px;
        min-width: 480px;
        margin: 0 auto
      }
      .lastResult {
        color: white;
        padding: 3px
      }
    </style>
  </head>

  <body>
    <h1>猜数字游戏</h1>

    <p>我刚才随机选定了一个100以内的自然数。看你能否在 10 次以内猜中它。每次我都会告诉你所猜的结果是高了还是低了。</p>

    <div class="form">
      <label for="guessField">请猜数: </label>
      <input type="text" id="guessField" class="guessField">
      <input type="submit" value="确定" class="guessSubmit">
    </div>

    <div class="resultParas">
      <p class="guesses"></p>
      <p class="lastResult"></p>
      <p class="lowOrHi"></p>
    </div>

    <script>

      // 开始编写 JavaScript 代码

    </script>
  </body>
</html>
